| q2 | WinAMP Equalizer Auto-load Presets |
| q5q | SuperBladePro Presets Data |
| q9q | SuperBladePro Presets Data |
| q9s | Mr Contrast Preset Data |
| qdr | Q-Dir Configuration |
| qemu | QEMU Configuration Data |
| qop | Autodesk 3D Studio MAX Quad Options |
| qsf | Altera Quartus II Settings File |
| qtes | QuickTime Export Settings |
| qwc | QuickBooks Web Connector Configuration |
| qyp | Quantec Yardstick Presets |
| r2w | Reflection UNIX and OpenVMS Settings |
| raskinplace | Raskin Place Layout |
| rb4 | RobotWorks Parameters File |
| rc | Runtime Configuration File |
| rcds | STAAD Advanced Concrete Design Project Settings Data |
| rcf | SonicWALL VPN Configuration |
| rcm | Hyena Remote Control Configuration File |
| rcolor | Rhino 3D Color Options |
| rdp | Remote Desktop Connection Settings |
| repo | Yum Package Repository Configuration |
| resmoncfg | Resource Monitor Configuration |
| rfi | BlackBerry Email Filter |
| rfw | Reflection FTP Settings |
| rhs | Iconyx BeamWare Setup Parameters Data |
| rin | RappInfo PostScript Converter Configuration |
| rkr | Rakarrack Presets Data |
| root | Bind Root Nameservers Configuration |
| rps | Autodesk 3D Studio MAX Render Preset Settings |
| rsx | RSLinx Configuration Data |
| rub | JQuery Rules Data |
| rvs | Lattice Reveal Analyzer Settings |
| sbs | Substance Designer Substance Package |
| sbsprs | Substance Designer Presets Data |
| scacfg | SuperCard Application Configuration |
